Steven Hawkings comes to mind as a potential patient, it would have ot be someone who needs a new body, not a new head. Otherwise, you are just keeping a body around, say if someone had a bad head injury.

The other thing is, transferring say Stalin’s head to a new body, which could allow for super bad guys to live a lot longer

This practice needs to be heavily regulated if it becomes medically viable

If it ever becomes truly viable, look for the death penalty to be applied for less serious crimes. Once voters realize they can vote for longer lives at the expense of the convicted and executed, young men and women’s bodies will become valuable resources.

Hopefully synthetic organs or self-cloned organs will come along before human-human transplant technology and technique becomes so perfect that it becomes a temptation to kill humans to extend the life of other humans.